If you are looking for visually stunning documentaries that leave words by the wayside then this is the list for you. Several of the films on this list are non-verbal documentaries while others capture the voices of their subjects but they are all without voiceover narration. This allows for the view to be submerged into the visuals and sounds of the film without verbal influence. Not all of these are non-verbal documentaries as some feature people that speak on camera but there is no voiceless narrator.
Observational documentary films such as the Qatsi trilogy by Godfrey Reggio have also been referred to as tone poems or visual essays. The juxtaposition of imagery is obviously meant to evoke emotion but what emotion specifically is entirely up to the viewer. Vote up the documentary films that you love experiencing and vote down the visual docs that left you wanting more.
Anima Mundi is a 1992 short documentary film directed by Godfrey Reggio.